BMW 335d

The "clean diesel" version of the acclaimed 3 Series sedan is both efficient and sporty, with a turbocharged 3.0-liter diesel inline-six-cylinder engine producing 265 horsepower with a whopping 425 pound-feet of torque that ensures quick launches. Driving the rear wheels via a six-speed automatic transmission, this engine can take the 335d to 60 mph in just under seven seconds, which is roughly on a par with the 335i gasoline version. Superior suspension and steering systems enable adept cornering abilities that reward a skilled driver at every turn, while an available M Sport package turns the 335d into an even racier package. Priced at around $44,500, it's rated at 23/36 mpg.